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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11465319 B1

PDFFull Text
Date of Patent:
Oct. 11, 2022

Filed:

Feb. 19, 2016

Bearing cage and manufacturing method therefor

Applicant:

Nsk Ltd., Tokyo, JP;

Inventors:

Yoshikazu Kuramoto, Fujisawa, JP;

Nariaki Aihara, Fujisawa, JP;

Takayuki Hiramoto, Fujisawa, JP;

Assignee:

NSK LTD., Tokyo, JP;

Attorney:

Sughrue Mion, PLLC

Primary Examiner:

Manley L Cummins, IV

Int. Cl.
CPC ...
B29C 45/00 (2006.01); B29C 45/26 (2006.01); F16C 19/06 (2006.01); F16C 33/41 (2006.01); F16C 33/49 (2006.01); B29C 45/27 (2006.01); B29L 31/04 (2006.01); B29K 105/12 (2006.01);
U.S. Cl.
CPC ...
B29C 45/0025 (2013.01); B29C 45/0046 (2013.01); B29C 45/2616 (2013.01); B29C 45/2669 (2013.01); B29C 45/2708 (2013.01); F16C 19/06 (2013.01); F16C 33/416 (2013.01); F16C 33/498 (2013.01); B29K 2105/12 (2013.01); B29L 2031/04 (2013.01); B29L 2031/045 (2013.01); F16C 2208/36 (2013.01); F16C 2208/52 (2013.01); F16C 2300/02 (2013.01);
Abstract

The resin injection gate is disposed at the pillar part. When the bearing cage is divided into first and second regions by an imaginary line connecting the resin injection gate and a weld to be formed at a position radially facing the resin injection gate, a resin reservoir that can store therein the melted resin is formed at the pillar part in only one of the regions. A circumferential distance between the resin reservoir and the weld is smaller than a circumferential distance between the resin reservoir and the resin injection gate. A cross-sectional area of a communicating part of the resin reservoir, which is configured to communicate with the pillar part, is equal to or less than a quarter of a cross-sectional area of the resin injection gate.

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